How do you make a backdoor?

Don't get me wrong on this, i am just curious.

Before i start, i want to say that i have basic (but only basic) lua knowledge; I've looked through some codes and changed a bit but never wrote anything notable myself. After i was a victim of a "backdoor attack" because i didn't check the free addon leaks i downloaded, i got very interested in the how.

He wouldn't talk to me after i contacted him, so i couldn't ask him myself. I've also never tried do download pre-modified versions of addons because i don't know in which way they are able to modify the text files and i am afraid of getting viruses :<.

Could anyone provide an example of a backdoor and/or maybe explain it?

Thank you for your time.

There are multiple ways to go about backdoors, if you're setting up for a server, you can set up a MySql backdoor that allows you to gain access to their database and if that is connected to their in-game system you can gain access through there.

The other way is simple concommand statements that set you specifically to admin, these are easily catchable by someone who knows code but, if you hide it correctly it can work

This sound coolish but why would you want to know?